The accusations were brought by New York City's Department of Consumer Affairs, which said on Wednesday that after testing 80 various package types from the high-end grocer, all had mislabeled weights.

"Shame on you, Whole Foods! I was aware that your prices were ridiculously high but to lie to your customers & blatantly rip them off, shame shame," Julie des Tombe wrote on the company's Facebook page.

Whole Foods, which said in a statement earlier this week that it disagrees with the DCA's "overreaching allegations," and that it has been cooperating fully since the investigation began, also issued a statement on Facebook:

As always, we appreciate the lively dialogue and feedback of our customers. That said, we ask that you are always...

A few consumers defended the high-end grocer, which has a reputation for selling pricier foods. The company recently announced plans for a new value-focused brand, called 365 by Whole Foods Market, which will launch in 2016.